Ventilating passenger-cars



(Model.)

A. J. CHASE.

Ventilating Passenger Cas.. n No. 240,658. Patented April 26,1881.

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ANDREW J. CHASE, OF BOSTON, MASSACHUSETTS.

VENTILATING PASSENGER-CARS.

SPECIFICATION forming part of Letters Patent No. 240,658, dated April26, 1881.

Application tiled February 12, 1881. (Model.)

`To all whom it may concern ger-Gars, of which the following is aspecifica-y tion.

The present invention has for its object to supply a passenger-car withpure, cool air free from dust and smoke, and at the same time dispose ofthe vitiated air in such a perfect manner that it is utterly impossiblefor the passengers to inhale and reinhale the same air over and overagain from each others lungs.

The invention consists in an apparatus for carrying out my method ofcar-ventilation, which comprises a chamber serving as a'receptacle forWater and ice, a vertical trunk or flue communicating with the externalatmosphere for conducting airinto the purifying and cooling chamber, anda vertical tube or lue which serves to conduct theA air from saidchamber into a register or distributing-box located near the ceiling ofthe car. Air-pipes or draft-filles located on the top of the car andopened at each end inclose or contain smaller pipes, which are made withelbows, which may be turned at will, or even by the draft, so that theiropen ends shall be in the' direction of the draft, or toward the rearend of the car. These smaller pipes serve to deliver the foul air fromthe interior of the car into the draft-fines on the roof thereof.

In the drawings, Figure l is a longitudinal sectional view of portion ofa passenger-car, showing my invention applied thereto. Fig. 2 is avertical cross-section, and Fig. 3 is aV longitudinal transversesectional view.

The letter A designates an air purifying and condensing chamber or box,which is preferably located in a corner of a passenger-car, and may beused as a seat. A vertical" tube or flue, B,rising from said chamber A,extends through the roof of the car and carries a suitable airfunnel, a,through which the external air enters, whether the car be in motion orstanding l still. The dust7 smoke, and other impurities entering withthe air are absorbed or eliminated therefrom by its passage throughwater contained in the bottom of the chamber. The

purified air, after its passage through the water, ascends through acompartment, C, of the chamber A, which contains ice or some otherrefrigerating' material. A vertical tube or flue, D, communicating withsaid ice-chamber, serves to convey the cool or rarefied air into aregister-box, E,from whence it is forced out into the car forrespiration.

Suitable means or any preferred form of register may be employed fordelivering the airl into the car.

It will be apparent that all the airI which euters through the tube B iscaused to pass through the Water for thoroughly washing it, and itssubsequent passage through the ice or refrigerating medium will tend topurify and condense the same. It follows that when the air is deliveredinto the car near the ceiling thereof, it will tend to fall toward theseated passengers, because of its increased gravity, due to its purityand temperature, as compared with the heated and respired air, which isever seeking a higher eleva-tion, due to its increased temperature andvapor.

In order to remove the vitiated or impure air from the interior of thecar, I provide the 1ongitudiual conduits or draft-fines F, which areplaced on either side of the monitor-top and are made open at both ends.In these draftlines are arranged movable pipes G, which are made withelbows, and are, by suitable devices, capable of being controlled fromthe interior of the car or even by the draft, so that their open endsshall be in the direction of the draft or toward the rear end of thecar. The external air, with its dust and smoke, is caused to coursethrough the draft-flues with the same velocity that the car is passingthrough the air, and thus it necessarily follows that the foul orvitiated air is dragged out of the car as by a suction-pump by thepowerful draft existing in the draft-dues.

The eduction-pipes G, insteadof bein g movable, may be fitted in thedraft-fines in a stationarymannerandhavetheir open endsturned inopposite directions. When this is the case the draft-fines orlongitudinal exhaust-conduits on the top of the car are provided withselfacting valves, so that the air cannot course through but one-side ata time, according to the direction in which the car is moving.

ICO

In order to remove the cinders and dirty water from the purifying andcondensing charnber as often as necessary, l provide the same with abottom outlet or tube, L, which is pro- -vided with a suitable closingdevice.

My system of ventilation does not necessitate making any change inexisting cars which are heated by steam-pipes or other heating devices;and it will be obvious that during the prevalence of snow and rain thedust and cinders in the air will be intercepted thereby, and not pa-ssinto the condensing-chamber. The ice in said chamber is in winter usedas a me dium for completely drying and purifying the air before itsadmission into the car.

The present invention involves a system of ventilation in which thecirculation of air is much the same as occurs in the open air under thenatural laws governing atmospheric circulation and temperature.

Although I have described my invention in connection with railway passenger-cars, it will be evident that my system is applicable to othertraveling vehicles-such, for example, as the cabins of Steamers.

What I claim is- 1. In an apparatus for Ventilating passengercars andother vehicles, the combination of au air washing and condensing chambercontaining water and ice, a vertical iiue communicating therewith andwith the external atmosphere, a vertical flue leading into anair-distributing chamber near the top ofthe ear, and discharge-duescommunicating with the interior of the car, all substantially as and forthe purposes herein described.

2. In an apparatus for Ventilating cars and other vehicles, thecombination of a washing and eondensin g chamber containing water andice, a vertical flue communicating therewith and with the externalatmosphere, a vertical flue leading into a distributing or register boxnear the top of the car, and longitudinal openended draft-dues on thecar-roof inclosin g eduction-tubes communicating with the interior ofA45 the car, as and. for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ANDREW J. CHASE.

Witnesses E. l?. NETTLETON, FIsHER AMES.

